public void editUser(String name, String password, String rights) throws InvalidPacketException {
QByteArray data = new QByteArray();
QByteArray value = new QByteArray(name + "\n" + password + "\n" + rights);
QDataStream s = new QDataStream(data, QIODevice.OpenModeFlag.WriteOnly);
s.writeInt(value.length());
data.append(value);
data.prepend(USER);
sendData(data);
while (socket.bytesAvailable() < 1) socket.waitForReadyRead(10000);
if (socket.read(1).at(0) != 4) throw new InvalidPacketException();
}
public void editProduct(String pId, String pName, String pPrice) throws InvalidPacketException {
QByteArray data = new QByteArray();
QByteArray value = new QByteArray(pId + "\n" + pName + "\n" + pPrice);
QDataStream s = new QDataStream(data, QIODevice.OpenModeFlag.WriteOnly);
s.writeInt(value.length());
data.append(value);
data.prepend(PRODUCT);
sendData(data);
while (socket.bytesAvailable() < 1) socket.waitForReadyRead(10000);
if (socket.read(1).at(0) != 4) throw new InvalidPacketException();
}
public String addVoucher(double value) throws InvalidPacketException {
QByteArray data = new QByteArray();
QByteArray v = new QByteArray(value + "");
QDataStream s = new QDataStream(data, QIODevice.OpenModeFlag.WriteOnly);
s.writeInt(v.length());
data.append(v);
data.prepend(VOUCHER);
sendData(data);
while (socket.bytesAvailable() < 5) // int
socket.waitForReadyRead(10000);
if (socket.read(1).at(0) != 4) throw new InvalidPacketException();
int length = (new QDataStream(socket)).readInt();
while (socket.bytesAvailable() < length) socket.waitForReadyRead(10000);
return socket.read(length).toString();
}